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New Telemetry Method Based on Expandable Reamer Technology

Publishing Venue

The IP.com Prior Art Database

Abstract

This invention describes a new method of sending data from a downhole tool to the surface. Instead of using mud pulse telemetry an expandable reamer is used to create certain signals that can be detected on surface.

Country

United States

Language

English (United States)

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Page 01 of 1

Title:

New Telemetry Method Based on Expandable Reamer Technology

Abstract:

This invention describes a new method of sending data from a downhole tool to the surface. Instead of using mud pulse telemetry an expandable reamer is used to create certain signals that can be detected on surface.

Description:

1. The expandable blades of the reamer will create additional torque when they engage with the formation. By modulating the force that is used to push the blades into the formation also the torque will be modulated. This can be detected on surface and the modulation pattern can be decoded.

2. Instead of modulating the force it would be possible to open and close an integrated flow port (nozzle) in the reamer. This bypass flow is also detectable on surface and can be decoded.

There might be additional ways to induce signals with the reamer that can be detected on surface.

This invention uses the features of an expandable reamer and delivers an alternative way to transmit data from a downhole tool to the surface. This can be used as a backup to conventional mud pulse telemetry, in parallel to it, or as stand-alone service.

This invention could enable to run reamers on top of competitor BHAs without the necessity to set up a whole surface system to detect and decode mud pulse telemetry as e.g. torque fluctuations could be detected with the existing rig systems as well.